Circadian Clocks in Different Species

Professor Myung explains how circadian clocks synchronize in organisms.

While flies’ clocks directly respond to light, mammals rely on the suprachiasmatic nucleus (SCN) to process light signals from the retina and coordinate rhythms across the body. Brain regions maintain individual circadian rhythms influenced, but not fully synchronized, by the SCN.

What effect does using phones or computers at night have on our biological clock?